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excitation

 - 4 dictionary results

ex⋅ci⋅ta⋅tion

  [ek-sahy-tey-shuhn, -si-]
Use excitation in a Sentence
–noun
1. the act of exciting.
2. the state of being excited.
3. Electricity.
a. the application of voltage to an electric device, as an electron-tube circuit, an antenna, or a dynamotor, often for producing a magnetic field in the device.
b. the voltage applied.
4. Physics. a process in which a molecule, atom, nucleus, or particle is excited.
5. Also called drive. Electronics. the varying voltage applied to the control electrode of a vacuum tube.
Origin:
1350–1400; ME excitacioun < LL excitātiōn- (s. of excitātiō), equiv. to L excitāt(us) (ptp. of excitāre; see excite ) + -iōn- -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ex·ci·ta·tion   (ěk'sī-tā'shən)   
n.  

  1. The act or process of exciting or an instance of it.

  2. The state or condition of being excited.

  3. Physiology The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ex·ci·ta·tion
Pronunciation: "ek-"sI-'tA-sh&n, "ek-s&-
Function: noun
: EXCITEMENT: as a : the disturbed or altered condition resulting from arousal of activity (as by neural orelectrical stimulation) in an individual organ or tissue b : the arousing of such activity
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

excitation ex·ci·ta·tion (ěk'sī-tā'shən)
n.

  1. The act of increasing the rapidity or intensity of the physical or mental processes; stimulation.

  2. The complete, all-or-none response of a nerve or muscle to an adequate stimulus, ordinarily including propagation of excitation along the membranes of the cell or cells involved.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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